19956905

素因数分解:

$5^1\times {\mathrm{47}}^1\times {\mathrm{163}}^1\times {\mathrm{521}}^1$

素因数の和:736

約数の個数: 16

約数和(自身を含む): 24655104

約数和(自身を除く): 4698199

約数列:

[1, 5, 47, 163, 235, 521, 815, 2605, 7661, 24487, 38305, 84923, 122435, 424615, 3991381, 19956905]

約数ペア:

[(1, 19956905), (5, 3991381), (47, 424615), (163, 122435), (235, 84923), (521, 38305), (815, 24487), (2605, 7661)]